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CVE-2021-27797

Quick assessment

Affected
n/a Brocade Fabric OS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Brocade Fabric OS（FOS）是美国博科（Brocade）公司的一套使用在交换机和路由器等设备中的嵌入式操作系统。 Brocade Fabric OS 存在信任管理问题漏洞，攻击者可利用该漏洞通过硬编码凭证绕过Brocade Fabric OS的限制，以获得用户权限。

AI Predicted 9.8 Difficulty: Trivial EPSS 1.35% · P70

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2021-27797

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Brocade Fabric OS before Brocade Fabric OS v8.2.1c, v8.1.2h, and all versions of Brocade Fabric OS v8.0.x and v7.x contain documented hard-coded credentials, which could allow attackers to gain access to the system.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Brocade Fabric OS 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Brocade Fabric OS（FOS）是美国博科（Brocade）公司的一套使用在交换机和路由器等设备中的嵌入式操作系统。 Brocade Fabric OS 存在信任管理问题漏洞，攻击者可利用该漏洞通过硬编码凭证绕过Brocade Fabric OS的限制，以获得用户权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- Brocade Fabric OS Brocade Fabric OS before Brocade Fabric OS v8.2.1c, v8.1.2h, and all versions of Brocade Fabric OS v8.0.x and v7.x -

II. Public POCs for CVE-2021-27797

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2021-27797

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Vendor Advisories for CVE-2021-27797 (1)

Same Patch Batch · n/a · 2022-02-21 · 12 CVEs total

CVE-2022-25297 7.5 HIGH Arbitrary File Write
CVE-2021-4115 polkit 安全漏洞
CVE-2021-44141 samba 后置链接漏洞
CVE-2022-0563 util-linux 安全漏洞
CVE-2021-45008 Plesk Cms 访问控制错误漏洞
CVE-2022-24553 Zfaka 代码问题漏洞
CVE-2021-44568 libsolv 缓冲区错误漏洞
CVE-2021-27753 HCL Sametime 路径遍历漏洞
CVE-2021-27755 HCL Sametime 安全漏洞
CVE-2021-27796 Brocade Fabric OS 安全漏洞
CVE-2022-24564 Checkmk 跨站脚本漏洞

IV. Related Vulnerabilities

Same product: Brocade Fabric OS
Same vendor: n/a

V. Comments for CVE-2021-27797

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